From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A380374CC for ; Sun, 21 Jan 2024 14:21:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.55.52.115 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705846878; cv=none; b=KzQymnbvsM0BrSoMSoz8obQz+j/BRDYUayYkX1gSmDK1JSOM7aIYJMp09dc0QhvsxDRNh/vC5DHYp7YzEBEnpPa0V4w2XBnkVdVq0/b2UV+dVvTrF7p1iav4X1jux0jh7bRFNvp4uTu5nAmnXzd23741ToD0RpzwZJOPpuVv9pg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705846878; c=relaxed/simple; bh=ZhmDrU8TY4wYDBfKqSK1zhudtBUu9KCEydyYWMshKGU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qR884vdqwtK1W7ZdQU5B9ieKmJhjphGeiRJD2nS7hhQbIeoYKmQlsim7JGQkOK8AFyOpmZtwut97R0Vn50bVmuWUQiJX+8XuAmVgjHHcRYeU2OitNqSKYPSG8dA9GKqKKNW/FMLBxrGhUIUBUkZHT2/DXo1ZQMi3y1TtCwQS/Og= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Etn0qr44; arc=none smtp.client-ip=192.55.52.115 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Etn0qr44" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1705846875; x=1737382875; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=ZhmDrU8TY4wYDBfKqSK1zhudtBUu9KCEydyYWMshKGU=; b=Etn0qr44xtcDht6ioqY1s0eeO3FSVrDAdRGAq81SkWAv3mc3Ae3sxXQf OSre6U8YOfIpPaYhuiO7AyVNmWUB74z1WOioGHyAsVPrSfsstv7NcdzKu vWE8S1wQOcB8oVPqLBYY2fA72rU6Ts+w4lWZXvrcHxh/f51VOanJK7CX4 tmrpWjYXKA3c7kIuKey0RKFHBbAXijVOLD3G3hOf/HWkU3KlO+mZU9fpQ ZBF8EKtQqXvxIUKdLZygSUPIUVcZXfiyewNH8pVsCBkQS9dCHUiNCH4uJ +NeKxDL3QwRqxISBPemCc6oC6+rO59afKVG3/T43ydPCYv89RJvOXK4CU w==; X-IronPort-AV: E=McAfee;i="6600,9927,10960"; a="400681939" X-IronPort-AV: E=Sophos;i="6.05,210,1701158400"; d="scan'208";a="400681939" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jan 2024 06:21:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10960"; a="928788849" X-IronPort-AV: E=Sophos;i="6.05,210,1701158400"; d="scan'208";a="928788849" Received: from lkp-server01.sh.intel.com (HELO 961aaaa5b03c) ([10.239.97.150]) by fmsmga001.fm.intel.com with ESMTP; 21 Jan 2024 06:21:13 -0800 Received: from kbuild by 961aaaa5b03c with local (Exim 4.96) (envelope-from ) id 1rRYhD-0005z4-1I; Sun, 21 Jan 2024 14:21:11 +0000 Date: Sun, 21 Jan 2024 22:21:10 +0800 From: kernel test robot To: Joe Damato Cc: oe-kbuild-all@lists.linux.dev Subject: Re: [RFC 1/1] eventpoll: support busy poll per epoll instance Message-ID: <202401212239.LAqIJgfm-lkp@intel.com> References: <20240120004247.42036-2-jdamato@fastly.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240120004247.42036-2-jdamato@fastly.com> Hi Joe, [This is a private test report for your RFC patch.] kernel test robot noticed the following build warnings: [auto build test WARNING on perf-tools-next/perf-tools-next] [also build test WARNING on tip/perf/core perf-tools/perf-tools linus/master horms-ipvs/master acme/perf/core v6.7 next-20240119] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Joe-Damato/eventpoll-support-busy-poll-per-epoll-instance/20240120-084514 base: https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git perf-tools-next patch link: https://lore.kernel.org/r/20240120004247.42036-2-jdamato%40fastly.com patch subject: [RFC 1/1] eventpoll: support busy poll per epoll instance config: i386-buildonly-randconfig-001-20240121 (https://download.01.org/0day-ci/archive/20240121/202401212239.LAqIJgfm-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240121/202401212239.LAqIJgfm-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202401212239.LAqIJgfm-lkp@intel.com/ All warnings (new ones prefixed by >>): >> fs/eventpoll.c:398: warning: Function parameter or member 'start_time' not described in 'busy_loop_ep_timeout' >> fs/eventpoll.c:398: warning: Function parameter or member 'ep' not described in 'busy_loop_ep_timeout' vim +398 fs/eventpoll.c 391 392 /** 393 * busy_loop_ep_timeout - check if busy poll has timed out. The timeout value 394 * from the epoll instance ep is preferred, but if it is not set fallback to 395 * the system-wide global via busy_loop_timeout. 396 */ 397 static inline bool busy_loop_ep_timeout(unsigned long start_time, struct eventpoll *ep) > 398 { 399 #ifdef CONFIG_NET_RX_BUSY_POLL 400 unsigned long bp_usec = READ_ONCE(ep->busy_poll_usecs); 401 402 if (bp_usec) { 403 unsigned long end_time = start_time + bp_usec; 404 unsigned long now = busy_loop_current_time(); 405 406 return time_after(now, end_time); 407 } else { 408 return busy_loop_timeout(start_time); 409 } 410 #endif 411 return true; 412 } 413 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki